Fig. 4: Contours of plastic strain for different initial dislocation densities and strain rates.

In a. SR = 10⁰s⁻¹, b SR = 10²s⁻¹, c SR = 10³s⁻¹ and d SR = 10⁴s⁻¹, ρ₀ = 1.4 × 10¹⁰m⁻². In e SR = 10²s⁻¹, f SR = 10³s⁻¹, g SR = 10⁴s⁻¹, h SR = 10⁵s⁻¹ and i SR = 10⁶s⁻¹, ρ₀ = 6.8 × 10¹¹m⁻². In j SR = 10¹s⁻¹, k SR = 10²s⁻¹, l SR = 10⁴s⁻¹ and m SR = 10⁵s⁻¹, ρ₀ = 4.1 × 10¹²m⁻². Plastic strain is given in units of mean plastic strain. In each row, the initial dislocation configuration is the same. The edge lengths of the depicted simulation boxes are 55.34 μm in the first row (a–d), 7.91 μm in the second row (e–i), 3.23 μm in the third row (j–m). SR is abbreviation of strain rate.